Fatal and serious injury traffic crash trends in Michigan : 1995-1999
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Summary
This report analyzes trends in fatal and serious injury traffic crashes in Michigan from 1995 to 1999 to inform highway safety planning. Using state crash data, the authors examined crash frequencies and rates across various demographics, road types, and hazardous actions. The study found significant declines in the number and rate of severe crashes over the five-year period, with the largest reductions occurring among drivers aged 16 to 34. The analysis also highlighted that city and county roads accounted for the majority of crashes, while excessive speed was the primary cause of single-vehicle incidents. The authors concluded that while safety goals were met, continued targeted efforts are necessary to sustain improvements.
Key finding
Fatal and serious injury crash rates in Michigan declined significantly between 1995 and 1999, with the most substantial reductions observed among drivers aged 16 to 34 and on city and county roads.
Methodology
dataset
Provenance
The full processing record for this entry. Every stage of this paper's journey through the pipeline is logged — what ran, with which tool and model, how many attempts it took, and when it last completed. Discovered via bulk_ingest_rosap on 2026-05-23 (7 acquisition events logged).
| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | rosap | — | — | 2 | 2026-05-23 |
| archive | success | — | — | — | 1 | 2026-05-23 |
| extract | skipped | empty | — | — | 4 | 2026-06-10 |
| clean | success | — | — | — | 1 | 2026-06-01 |
| chunk | success | — | — | — | 1 | 2026-06-01 |
| embed | success | — | — | — | 1 | 2026-06-02 |
| enrich | success | — | — | — | 1 | 2026-05-23 |
| promote | success | — | — | — | 1 | 2026-05-23 |
| summarize | success | llm | qwen3.6-27b | — | 3 | 2026-06-01 |
| tag | success | vector_similarity | — | — | 19 | 2026-06-11 |
| verify | success | — | — | — | 1 | 2026-06-03 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-01; verification: verified.
Topics
Ranked by relevance to this paper. Hover a topic for its definition.
- fatality injury trends
- incidence prevalence
- demographic disparities
- comparative international
- sex gender
Information type
What kind of knowledge this paper contributes, grouped by family — independent of topic (what it is about) and method (how it was studied).
- Empirical Findings: crash risk outcomes, observational prevalence